NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Jim Nguyen, D.O.

Nephrology Physician in San Dimas, CA · enumerated 2015.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1417338898

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Registry record

Entity type Individual (Type 1)
Name Dr. Jim Nguyen
Credential D.O.
Sex Male
Practice address San Dimas, CA, 91773
Phone (909) 542-2777
Enumeration date Jun 11, 2015
Last updated in NPPES Jan 21, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License 20A16296 (CA) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Jim Nguyen's NPI record?
Cross-check NPI 1417338898 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1417338898 active?
Yes, as of the latest NPPES snapshot, NPI 1417338898 is active (record last updated 2021-01-21).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-21.